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JPS57106261A - Data transmission device - Google Patents

Data transmission device

Info

Publication number
JPS57106261A
JPS57106261A JP55182393A JP18239380A JPS57106261A JP S57106261 A JPS57106261 A JP S57106261A JP 55182393 A JP55182393 A JP 55182393A JP 18239380 A JP18239380 A JP 18239380A JP S57106261 A JPS57106261 A JP S57106261A
Authority
JP
Japan
Prior art keywords
data
equipment
circuit
address
transmission line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP55182393A
Other languages
Japanese (ja)
Other versions
JPS6360939B2 (en
Inventor
Shintaro Miura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP55182393A priority Critical patent/JPS57106261A/en
Publication of JPS57106261A publication Critical patent/JPS57106261A/en
Publication of JPS6360939B2 publication Critical patent/JPS6360939B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling

Landscapes

  • Small-Scale Networks (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To use data on a transmission line efficiently, by detecting an address on the data transmission line in a master equipment to detect an address data request to a slave equipment. CONSTITUTION:When a data request to a slave equipment 14 is issued from a master equipment 12, the data request in a control part 22 of a main equipment 13 is received by a receiving amplifying circuit 27, and its address is taken into a control information receiving circuit 33, and it is detected that the request is directed to the slave equipment 14. When data is sent from the slave equipment 14 to a transmission line 11, the receiving address is decoded by the circuit 33, and a transmission and receiving control circuit 32 detects that data should be transmitted to the main equipment 12 from the slave equipment 14, and the circuit 32 discriminates that data is required in the main equipment 13, and gates 29 and 31 are closed and opened respectively to take data of the transmission line 11 into a receiving circuit 31.
JP55182393A 1980-12-22 1980-12-22 Data transmission device Granted JPS57106261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55182393A JPS57106261A (en) 1980-12-22 1980-12-22 Data transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55182393A JPS57106261A (en) 1980-12-22 1980-12-22 Data transmission device

Publications (2)

Publication Number Publication Date
JPS57106261A true JPS57106261A (en) 1982-07-02
JPS6360939B2 JPS6360939B2 (en) 1988-11-25

Family

ID=16117528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55182393A Granted JPS57106261A (en) 1980-12-22 1980-12-22 Data transmission device

Country Status (1)

Country Link
JP (1) JPS57106261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245266A (en) * 1985-08-22 1987-02-27 Matsushita Graphic Commun Syst Inc Method for remote fault diagnosis and fault repair of communication terminal equipment
JPS62287722A (en) * 1986-06-06 1987-12-14 Matsushita Electric Ind Co Ltd Power line communication control equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245266A (en) * 1985-08-22 1987-02-27 Matsushita Graphic Commun Syst Inc Method for remote fault diagnosis and fault repair of communication terminal equipment
JPS62287722A (en) * 1986-06-06 1987-12-14 Matsushita Electric Ind Co Ltd Power line communication control equipment

Also Published As

Publication number Publication date
JPS6360939B2 (en) 1988-11-25

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